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Finding the Fourth Proportional to 245,323.49, 338,496.79 and 143,329.25

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Solution

The fourth proportional to 245,323.49, 338,496.79 and 143,329.25 is: 197,765.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,323.49 : 338,496.79 = 143,329.25 : x
  2. Step 2: Convert to fraction form
    245,323.49/338,496.79 = 143,329.25/x
  3. Step 3: Cross multiply
    245,323.49x = 338,496.79 × 143,329.25
  4. Step 4: Simplify right side
    245,323.49x = 48,516,489,524.79
  5. Step 5: Solve for x
    x = 48,516,489,524.79/245,323.49
  6. Step 6: Final answer
    x = 197,765.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.